BE734592A - - Google Patents
Info
- Publication number
- BE734592A BE734592A BE734592DA BE734592A BE 734592 A BE734592 A BE 734592A BE 734592D A BE734592D A BE 734592DA BE 734592 A BE734592 A BE 734592A
- Authority
- BE
- Belgium
- Prior art keywords
- length
- pipe
- enclosure
- sound
- acoustic
- Prior art date
Links
- 238000001228 spectrum Methods 0.000 claims description 8
- 239000012080 ambient air Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000005069 ears Anatomy 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000003595 spectral effect Effects 0.000 claims 1
- 230000008447 perception Effects 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 101100398686 Drosophila melanogaster larp gene Proteins 0.000 description 1
- 101100510663 Mus musculus Larp1 gene Proteins 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 235000015107 ale Nutrition 0.000 description 1
- OIPMQULDKWSNGX-UHFFFAOYSA-N bis[[ethoxy(oxo)phosphaniumyl]oxy]alumanyloxy-ethoxy-oxophosphanium Chemical compound [Al+3].CCO[P+]([O-])=O.CCO[P+]([O-])=O.CCO[P+]([O-])=O OIPMQULDKWSNGX-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- PSGAAPLEWMOORI-PEINSRQWSA-N medroxyprogesterone acetate Chemical compound C([C@@]12C)CC(=O)C=C1[C@@H](C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@](OC(C)=O)(C(C)=O)CC[C@H]21 PSGAAPLEWMOORI-PEINSRQWSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 206010037833 rales Diseases 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE734592 | 1969-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE734592A true BE734592A (Direct) | 1969-12-01 |
Family
ID=3854906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE734592D BE734592A (Direct) | 1969-06-16 | 1969-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE734592A (Direct) |
-
1969
- 1969-06-16 BE BE734592D patent/BE734592A/fr unknown
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